From 236476180c0f5d308fb313d5570d0b067307884c Mon Sep 17 00:00:00 2001 From: Anshuman Khandual Date: Fri, 14 Jan 2022 14:05:07 -0800 Subject: [PATCH] mm/debug_vm_pgtable: update comments regarding migration swap entries Commit 4dd845b5a3e5 ("mm/swapops: rework swap entry manipulation code") had changed migtation entry related helpers. Just update debug_vm_pgatble() synced documentation to reflect those changes. Link: https://lkml.kernel.org/r/1641880417-24848-1-git-send-email-anshuman.khandual@arm.com Signed-off-by: Anshuman Khandual Cc: Jonathan Corbet Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/vm/arch_pgtable_helpers.rst | 14 +++++++------- mm/debug_vm_pgtable.c | 4 ++-- 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/Documentation/vm/arch_pgtable_helpers.rst b/Documentation/vm/arch_pgtable_helpers.rst index 552567d..b3166c3 100644 --- a/Documentation/vm/arch_pgtable_helpers.rst +++ b/Documentation/vm/arch_pgtable_helpers.rst @@ -247,12 +247,12 @@ SWAP Page Table Helpers | __swp_to_pmd_entry | Creates a mapped PMD from a swapped entry (arch) | +---------------------------+--------------------------------------------------+ | is_migration_entry | Tests a migration (read or write) swapped entry | -+---------------------------+--------------------------------------------------+ -| is_write_migration_entry | Tests a write migration swapped entry | -+---------------------------+--------------------------------------------------+ -| make_migration_entry_read | Converts into read migration swapped entry | -+---------------------------+--------------------------------------------------+ -| make_migration_entry | Creates a migration swapped entry (read or write)| -+---------------------------+--------------------------------------------------+ ++-------------------------------+----------------------------------------------+ +| is_writable_migration_entry | Tests a write migration swapped entry | ++-------------------------------+----------------------------------------------+ +| make_readable_migration_entry | Creates a read migration swapped entry | ++-------------------------------+----------------------------------------------+ +| make_writable_migration_entry | Creates a write migration swapped entry | ++-------------------------------+----------------------------------------------+ [1] https://lore.kernel.org/linux-mm/20181017020930.GN30832@redhat.com/ diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c index 228e395..2a2b24e 100644 --- a/mm/debug_vm_pgtable.c +++ b/mm/debug_vm_pgtable.c @@ -888,8 +888,8 @@ static void __init swap_migration_tests(struct pgtable_debug_args *args) pr_debug("Validating swap migration\n"); /* - * make_migration_entry() expects given page to be - * locked, otherwise it stumbles upon a BUG_ON(). + * make_[readable|writable]_migration_entry() expects given page to + * be locked, otherwise it stumbles upon a BUG_ON(). */ __SetPageLocked(page); swp = make_writable_migration_entry(page_to_pfn(page)); -- 2.7.4